Fiora Vs Riven

Late game it typically goes to Fiora. She just scales a bit harder in a pure 1v1, especially since given no outside influences she can save her ult to dodge the riven ult.

EDIT: Before I get lynched by Riven fans, I WILL say that while Fiora has the STATISTICAL AND MECHANICAL advantage, it would very much be a skill matchup, because it will depend greatly upon whether or not riven can bait the parry, and whether or not riven lands the stun (which in most cases would require nearby minions to not be the case).

Fiora

I've lost to a riven as fiora before but only because I was drunk and forgot I had an 'r' button.